Apparatus for making ice-cream and analogous substances.



J. McA. LONG.

APPARATUS FOR MAKING ICE CREAM AND ANALOGOUS SUBSTANCES.

APPLICATION FILED sznzs. 1914.

1,1 68,426. Patented Dec. 7, 1915.

CDLUMBIA PLAHOGRAPH (0-. WASHINGTON, D. C.

Joi-rN McAULIFFE tone, or MANoirnsTEn, ENGLAND.

APPARATUS FOR MAKING ICE-CREAM AND ANALOGOUS SUBSTANCES.

Application filed September 28, 1914.

To all whom it may concern:

Be it known that 1, JOHN MoAULrrrn Lone, a subject of the King of Great Britain and Ireland, residing at 2 Bedford street,

Manchester, England, have invented a new and useful Apparatus for Making Ice-Cream and Analogous Substances, of which the following is a specification.

7 My invention relates to improvements in apparatus for making ice cream and analogous substances and refers to apparatus of the type in which a hollow drum containing the freezing mixture is rotated Within a vessel or container for the material to be frozen or cooled, the frozen material adhering to the periphery of the drum being removed by a hingedscraper device adapted to be brought tangential to the drum which serves also as a guide or spout to direct the removed material into any receptacle.

The objects of theiinprovements are first to provide a more convenient construction ofthe drum in which one of the sides andthe periphery is in one piece and the other side is a removable plate adapted to engage against the free edge of the periphery and form a closure for the hollow drum, secondly to construct the bearings for mounting the chum so as to facilitate the removal of the side aforesaid, thirdly to construct the scraper so that its fit upon the drum periphery is improved and fourthly the construction of the bearings for the drum and the scraper as integral strips. I attain these objects by the means illustrated in the accompanying drawings. V

Figure l is a side elevation of the apparatusocomplete with freezing drum, container forthe material to be frozen and scraper for removing the frozen material. Fig. 2 is a central vertical section thereof. Fig. 3 is a longitudinal section of the preferred scraper. Fig. 4 is a section on line l 4 of Fig. 3.

On this drawing a is the base, Z2 shows one form of container for the material which is convenient because it may bevery cheaply produced by pressing or spinning or a combination of these processes; 0 is the scraper for removing the material from the periphcry of the drum d. The periphery e of the drum is of convex curvature as shown at Fig. 2 and on the side of it are the shoulders f g; 7 being pressed up from one side plate It, and 9 being curled over in the manner of a bead. The drum comprising the side It, shoulder f and periphery 6 can be produced Specification of Letters Eatent.

perforation of the said side.

Patented Dec. 7, 1915.

Serial No. 863,698..

from one flat blank of metal by pressing or spinning or a combination of the processes and the beaded edge formingthe shoulder g strengthens the free edge and also forms a convenient surrounding surface to receive the removable side plate a which may engage, the same by friction. The removable side i is providedwith a rubber or other suitable packing washer j to make a secure closure.

The drum is provided with trunnions for mounting it for rotation by means of a rod is provided at one end Withan enlarged part or trunnion Z which has a collar m that takes abearing against the side it of the drum when the rod is passed through a central 0n the inside a washer and packing such as a bear against the inner surface of plate 7i and a nut 0 is threaded onto the rod rigidly attaching the trunnion Z. The rod is projects centrally through the opening at the other side of-the drum and the removable plate is passed over it. The removable plate has. a hollow trunnion p secured by a nut g on the inside of the plate 2' and by means of this hollow trunnion the plate is passed over the rod 70 and is pressed home against the bead g. The handle 1 with a projection s to engage a slot in trunnion p is then passed over the rod and a thumb nut or milled nut t threaded onto the end of the rod is makes the parts secure. The slotted bearings u on the container b are preferably inclined as shown at Fig. l to prevent the tendency of the drum to lift out of its bearings when being rotated. The slotted bearings u are preferably joined by an integral strip '0 to a jaw or slotted bearing to which serves for mounting the trunnion rod a: of the scraper a. One bearing for the scraper is preferably an eye and the other thejaw or slotted bearing to.

The scraper c is formed with upturned side flanges 3 so that it forms a trough or channel and its forward end is bent laterally and also longitudinally for a short distance to fit the curve of the drum periphery. This is clearly shown at Figs. 1, 3, and 4 and by means of this formation the scraper may fit snugly on the convex drum surface and down the sides of such convex surface to the shoulders formed at f and g.

Vdhat I claim then is:

1. An apparatus for making ice cream and analogous substances comprising. in combination a container for the material to be treated and a hollow drum for receiving the freezing material, means whereby said. QILU W';

is mounted so as to be rotatable partially Within the said conta'inerfand' saiddrn'm being rmedastq. one. side andits periph- "ery, which is a Wide transverse curve, in one; a piece termmatmg in a thickened edge and as to 'th'e other sideasa separate removable plate, said plate beingadapte'd'tdengage the free'thickened edge of said periphery and forma closure forthe drum; and means for retaining said 'sidep'lat e'in closed position, saidl'as't mentionedfmeans alsdformingsaid'drumj us for makingfice cream and anal'qgdn's substances comprising in combi natlofra contai'ner' for the -mat'er1a1 to be" treated anda'houaw arm forreleii'ii ngfthe freezing material, said I 5 container ha'ving slotted bearing projections 'on the upper edge"thereof?and saidd'rum having trimnions' projectingfiom" its" "sides to" engage" said bearings, said drum being formed With one side and its "periphery," Which isa Wide transverse curve, terriiinatingin a thickened edge; and "with the other side removable, and adapted to "close against the rise sage of said periphery, one; side and the j-peripheral W ll bj g integral; and means forfr'etai'rl of. said trunnions. by, Which the drum is "mounted.

sajd last mentioned means also carrying one 7 aftransverselyfcurired perinhery Ii-n one piece and -with the otherside forming a detachable closure plate 'and said scraperfbeing enrvedat its forWard 'pQrtion both'transvrsely andlongitu'dinallfifwith theperiph-j ery of said drum andsaid scraper having upwardly "turned side's; hearings for" said drum on said container and hearings for said scraper on said eonta-iner both"bearin'gs on'aehside of said container beingfiormed V as a siiiglefstrip substantially as described. In testimon whereof, have signed my name to this specification in the'prefsenceo f two subscribing Witnesses. F

JQeL i -Witnesses:

L/HLCOLM SMEIHURSfD, GEoRGaW AyER;

-Gopies of thisl patnt-may he obtained fOrfiiVe cents each, by, addressing the 1,(lommis sionerof.Patents, washi gtonflkwi, i 

